CN107049469A - The ablation catheter detected with radial load - Google Patents
The ablation catheter detected with radial load Download PDFInfo
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- CN107049469A CN107049469A CN201611056417.5A CN201611056417A CN107049469A CN 107049469 A CN107049469 A CN 107049469A CN 201611056417 A CN201611056417 A CN 201611056417A CN 107049469 A CN107049469 A CN 107049469A
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- electrode
- conduit
- contact force
- force sensor
- tissue
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
- A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
- A61B2018/00029—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids open
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/0016—Energy applicators arranged in a two- or three dimensional array
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00214—Expandable means emitting energy, e.g. by elements carried thereon
- A61B2018/00267—Expandable means emitting energy, e.g. by elements carried thereon having a basket shaped structure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00345—Vascular system
- A61B2018/00351—Heart
- A61B2018/00357—Endocardium
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
- A61B2018/00583—Coblation, i.e. ablation using a cold plasma
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00642—Sensing and controlling the application of energy with feedback, i.e. closed loop control
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00875—Resistance or impedance
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/064—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension
- A61B2090/065—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension for measuring contact or contact pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2218/00—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2218/001—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
- A61B2218/002—Irrigation
Abstract
The present invention is entitled " ablation catheter that there is radial load to detect ", discloses for providing and using the system and method for ablation catheter.The conduit may include the annular electrode with contact force sensor, and the contact force sensor provides signals to system controller, with indicate ablating electrode whether contacted with tissue to be ablated and ablating electrode with tissue exposure level.
Description
Technical field
The disclosure relates generally to the method and apparatus for percutaneous therapeutic treatment, and more particularly to conduit, particularly
Ablation catheter.More specifically, this disclosure relates to the ablation catheter with the radial direction for being connected to ablating electrode force detection sensor is set
Meter.
Background technology
Radio frequency (RF) electrode catheter has been commonly used to medical practice for many years.They are used to stimulate and the electricity in mapping heart
Activity, and for melting the site of abnormal electrical activity.Specifically, targeting ablation can be performed to realize various instructions.For example,
The ablation of cardiac muscular tissue is a kind of well known treating irregular heart pulse means, and it and can form ablation stove to break using conduit application RF
Arrhythmogenic current path in bad heart tissue.And for example, kidney ablation code can relate to insert single electrode or multiple electrode catheter
Enter into the arteria renalis, to complete the helical form or peri lesion in the artery, so that neural for treatment for the arterial resection
Hypertension.
In such operation, the commonly provided reference electrode, the reference electrode could attach on the skin of patient, or use
Second conduit provides reference electrode.RF electric currents are applied to one or more electrodes of ablation catheter, and electric current passes through week
Enclose medium (that is, blood and tissue) and flow to reference electrode.The distribution of electric current depends on the electrode surface compared with blood and connect with tissue
Tactile amount, the blood has than organizing high conductance.Due to the resistance of tissue, therefore there is the heating to tissue.Tissue
The cytoclasis so that in destination organization is sufficiently heated, so as to cause to form nonconducting ablation stove wherein.Melting stove can
To be formed in the tissue with electrode contact or in adjacent tissue.
During code is melted, electrode is aware of when for practitioner adjacent to tissue to be ablated and when is connect
It is important to touch tissue to be ablated.For having those catheter designs of single electrode at tip, device for force feedback is used for
Practitioner is known whether tip contacts tissue, tip in tissue how far and preferably electricity be provided fed back.However, for many
Each electrode in electrode assembly, the electrode that force feedback sensor is not useable for positioning along catheter length provides similar letter
Breath.
Accordingly, it is desirable to provide a kind of multi-electrode ablation catheter with feedback controller, the feedback controller is independent
Each electrode in electrode provides contact information.As will be described below like that, the disclosure meets these and other needs.
The content of the invention
This disclosure relates to which a kind of conduit, the conduit has elongate body, is arranged on the center section of elongate body
At least one electrode and at least one the contact force sensor component for being connected at least one annular electrode.
In one aspect, contact force sensor component includes retainer and deformeter, and the deformeter is attached to retainer.Separately
Outside, the deformeter includes circuit and circuit current source is connected to at least single line material of system controller.
In one aspect, retainer includes being connected to the semi-circular portion of flange part.In addition, retainer is arranged in electricity
In the opening of correspondence shaping in the wall of pole.
In one aspect, deformeter also includes the first attachment part and the second attachment part.In this regard, the first attachment
Divide the wire rod for being used for connecting contact force sensor, and the second attachment part is used for inwall of the deformeter fixed to electrode.
In one aspect, at least one electrode includes the RF ablation electricity of multiple flushing holes with the wall formation through electrode
Pole.In addition, conduit can be configured for the multiple electrode catheter for forming spiral-shaped, lasso trick or basket shape in deployment.Again
Person, conduit may include deflectable tip and point electrode.
In one aspect, electrode may also include three contact force sensors, and each contact force sensor surrounds the circle of electrode
Week is evenly spaced apart.
The disclosure further relates to a kind of method for being used to melt a part for the tissue of patient by operator.This method
Including inserting a catheter into patient's body.Conduit includes elongate body, at least one be arranged on the center section of elongate body
Individual electrode, at least one the contact force sensor component for being connected to electrode and formation are multiple in the wall of at least one electrode
Flushing hole.This method also includes connecting the conduit to system controller, and the system controller can be received from multiple sensings
The signal of device and deliver power at least one electrode and control at least one electrode electric power with base at least in part
Carry out ablation tissue in the measured value from multiple sensors.
In one aspect, this method also includes determining electrode based on the measured value from least one contact force sensor
Contact with tissue and the exposure level for estimating electrode and tissue.
The disclosure further relates to a kind of system for being used to melt a part for tissue, and the system includes conduit, and this is led
Pipe has elongate body, at least one electrode being arranged on the center section of elongate body, is operably connected at least one
Multiple flushing holes of at least one the contact force sensor component and formation of individual annular electrode in the wall of at least one electrode.System
System also include system controller, the system controller can receive the signal from multiple sensors and deliver power to
A few electrode simultaneously controls the electric power at least one electrode with ablation tissue.In addition, system controller, which is received, comes from contact force
The signal of sensor is to indicate the exposure level of at least one electrode and tissue to be ablated.
Brief description of the drawings
Other feature and advantage will be become by the following and more specific description of the preferred embodiment of the disclosure
It is clear that reference character as depicted in the figures and wherein similar generally referred in whole view same section or
Element, and wherein：
Fig. 1 is the perspective view of the conduit according to embodiment of the present invention.
Fig. 2 is the helical form multi-electrode at the distal end of Fig. 1 conduits according to another embodiment of the present invention
The perspective view of component.
Fig. 3 is the perspective view of the electrode with contact force sensor according to embodiment of the present invention.
Fig. 4 is the sectional view of the contact force sensor of Fig. 3 according to embodiment of the present invention.
Fig. 5 is the perspective view of the annular electrode of Fig. 3 according to embodiment of the present invention.
Fig. 6 is the perspective view of the deformeter of Fig. 3 according to embodiment of the present invention.
Fig. 7 is the perspective view of the retainer of Fig. 3 according to embodiment of the present invention.
Fig. 8 is saturating for the annular electrode with multiple contact force sensor components according to another embodiment of the present invention
View.
Fig. 9 is the schematic diagram of the ablation system according to embodiment of the present invention.
Embodiment
First, it should be understood that the disclosure is not limited by specific illustrative material, construction, routine, method or structure, because
These equal alterables.Therefore, preferred material and method while characterized as, but similar or of equal value with those described herein permitted
This many Class Options can be used in the practice of embodiment of the disclosure.
Also, it is understood that terms used herein is intended merely to describe the purpose of the specific embodiment of the disclosure, and
It is not intended to be limited.
The description of the exemplary as the disclosure is intended to below in conjunction with the embodiment that accompanying drawing is listed, and
It is not intended to represent that the unique instances embodiment of the disclosure can be put into practice.Term " the example used in whole this specification
Property " refer to " be used as example, example or illustration ", and it is not necessarily intended to be interpreted as preferred or better than other examples embodiment party
Case.Detailed description includes specific detail, and its object is to provide the thorough understanding to the exemplary of this specification.It is right
In those skilled in the art it is evident that, this specification can be put into practice in the case of without these specific details
Exemplary.In some cases, well known construction and device is illustrated in block diagram, fuzzy presented herein to avoid
Exemplary novelty.
For the sake of only succinct and clear, directional terminology, such as top, bottom, left side, the right side can be used relative to accompanying drawing
Side, it is upper and lower, on, under, lower section, below, below, rear portion and front portion.These terms and it is similarly oriented term and should not be managed
Solve to limit the scope of the present disclosure in any way.
Unless otherwise defined, otherwise all technologies used herein and scientific terminology are respectively provided with and disclosure art
Those of ordinary skill is generally understood that identical implication.
Finally, as this specification and the appended claims, except non-content is expressly stated otherwise, otherwise singulative
" one ", " one kind " and it is " described " include plural referents.
As shown in figure 1, the disclosure includes the multi-electrode ablation catheter 10 with distal tip section, the distal tip section
Including the point electrode 12 for being adapted to contact with destination organization.According to disclosed embodiment, conduit 10 includes elongate body, should
Elongate body includes insertion axle or catheter main body 14 with longitudinal axis, and with the multiple annulars set along its length
The interstitial segment 16 in the catheter main body distal side of electrode 22.Annular electrode 22 also is adapted for contacting with destination organization.
In one embodiment, conduit 10, which may be used as single point electrode or its, can be deployed in arc to treat
As multiple electrode catheter.In this embodiment, interstitial segment 16 can be with catheter main body deviate it is unidirectional or two-way can be inclined
Turn off-axis, as indicated, to provide the arc required for keeper electrode to melt the tissue of arc patterns.Catheter main body 14 it is near
Side is joystick 18, and the joystick allows operator to manipulate conduit, and this may include inclined when use can turn to embodiment
Turn interstitial segment 16.In embodiment, joystick 18 may include deflection knob 20, and it is pivoted clockwise or counterclockwise
So as to be deflected with corresponding direction.In other embodiments, can using it is other can turn-around design, such as, such as in the U.S.
Patent 6,468,260,6,500,167 and 6,522,933 and the U.S. Patent Application Serial Number submitted on December 3rd, 2010
Being used for described in 12/960,286 manipulates the joysticks of multiple control lines, and the entire disclosure of the patent is to quote
Mode be incorporated herein.
Catheter main body 14 is flexible, i.e. can bend, but be essentially incompressible along its length, and
And can be made up using any suitable construction and of any suitable material.In one aspect, it is made up of polyurethane or PEBAX
Outer wall can have by the embedded mesh grid such as stainless steel (as known in the art), it is firm with the torsion for increasing catheter main body 14
Degree so that when rotating joystick 20, interstitial segment 16 will rotate in a corresponding way.According to desired use, catheter main body
14 external diameter can be about 8 French (french), and can be 7 French in some embodiments.Equally, conduit
The outer wall thickness of main body 14 can be sufficiently thin that central lumen can accommodate any desired wire rod, cable and/or pipe.Conduit
Length available, you can with the part in insertion body, can be varied as desired in.In an exemplary embodiment, length available can be
In the range of about 110cm to about 120cm.The length of interstitial segment 16 may correspond to the relative small portion of length available, such as
From about 3.5cm to about 10cm, and in some embodiments, from about 5cm to about 6.5cm.
Fig. 2 shows the another embodiment of the multiple electrode catheter 100 according to another embodiment of the present invention.In the implementation
In scheme, conduit 100 include elongate body, the elongate body include with longitudinal axis insertion axle or catheter main body 114 with
And the interstitial segment 116 positioned at catheter main body distal side.In this embodiment, compared with the embodiment of FIG. 1, all electrodes
It is respectively positioned on the nearside at catheter distal tip.Here, a series of length of annular electrodes 122 along interstitial segment 116 is set.Annular
Electrode 122 is adapted to contact with destination organization.In this embodiment, once interstitial segment 116 is deployed in treatment site, it is just
Formed spiral-shaped.In this embodiment, when activating, the formation of annular electrode 122 spiral ablation stove pattern.The embodiment
All other aspect be similar to the above for the those aspects described in embodiment illustrated in fig. 1.In the embodiment
In, conduit is 8 French, 9 French, 11 French or 12 French.
Turning now to Fig. 3, shown is an embodiment of the annular electrode for including contact force sensor 130.Fig. 4 is extremely
Fig. 7 shows the details of contact force sensor component 130.Referring again to Fig. 3, annular electrode can Fig. 1 and Fig. 2 be shown respectively
Electrode 12 or electrode 122.For simplicity, annular electrode will be referred to as annular electrode 122, although as known in the art
What annular electrode may be adapted to the present invention.Annular electrode 122 is configured to elongated, substantially with multiple flushing holes 126
Upper cylindrical part 124.In ablation tissue, flushing hole 126 can be used for rinsing tissue.The housing of electrode 122 is defined
Connected with the cavity fluid for extending the length of catheter main body 114 to supply the internal cavity 128 of rinse fluid art.Multiple flushing holes 126
In the whole surface for being substantially evenly distributed in electrode 122, into and the fluid of full cavity can pass through flushing hole outflow electricity
Pole 122, to provide to electrode 122 and be cooled down adjacent to the environment of electrode 122 as needed.The housing of electrode 122 can be by
Any suitable conductive material (such as, palladium, platinum, gold, iridium and combinations thereof and alloy, including Pd/Pt is (for example, 80% palladium/20%
Platinum) and Pt/Ir (for example, 90% platinum/10% iridium)) be made.
It is contact force sensor 130 to be arranged in annular electrode 122.Contact force sensor component 130 includes retainer
132 and deformeter 134.Fig. 7 shows an embodiment of retainer 132.In this embodiment, retainer 132 includes half
Circular contact part 138 and the flange portion 140 for being connected to contact portion 138.Contact portion 138 be essentially it is dome-shaped and
Protrude through the opening 136 in the housing of annular electrode 122.Following article is described in more detail, when retainer is exposed to by connecing
During the power for the inner chamber for touching blood vessel or organ, opening 136 allows retainer to move radially.As clearly shown in Figure 4, flange portion 140
It is arranged between the inwall 142 of the housing of annular electrode 132 and the top surface 144 of deformeter 134.Flange portion 140 serves as anchor
Part is determined so that retainer is remained set in annular electrode 122.Alternatively, flange portion 140 can be removed and contact portion
It is attached directly on deformeter 134.Retainer 132 can be made up of any suitable material, such as acetal polymer, polyethers
Ether ketone (" PEEK "), makrolon or acronitrile-butadiene-styrene (" ABS ").In another embodiment, retainer 132
The polymer drops of the opening 136 with complementary are shaped to so that spherical retainer is maintained in electrode.This area technology people
Member it will be clear that, the shape of retainer and corresponding opening may differ from above-mentioned round-shaped.In embodiment, retainer can be with
It is the ellipse of the elongated dome shape with the corresponding opening in electrode shell.
As illustrated in FIG. 4, deformeter 134 is the slim-lined construction for the inwall 142 for being attached to electrode 122.Deformeter 134 can be with
It is made up of any suitable material of wherein known strained speed, such as polyamide or metal such as Nitinol.With reference now to figure
6, the shape of deformeter 134 has the radius of curvature complementary with the inwall 142 of annular electrode 122, but can use flexible material
Material such as polyimides and the inwall that annular electrode will be conformed to.Deformeter 134 includes the first attachment part 146 and the second attachment
Part 148.Deformeter 134 by any method as known in the art it is such as gluing, welding or melting welding be attached to electrode 122.
In one embodiment, it is attached deformeter 134 by the way that deformeter 134 to be welded to the electrode 122 at welding backing 150.
In other embodiments, instead of welding, deformeter, which includes, stays in the resistance welding deformeter bare metal used into electrode
Region.
Deformeter 134 also includes being used for the embedded circuit 152 for the radial load that determination is applied on retainer 132.Circuit 152
The system controller of more detail below is electrically connected to via wire rod.Suitable wire rod is connected in the first attachment part 146
The deformeter at place.In practice, when retainer 132 is exposed to radial load, it engages deformeter 134.When due to being connect in tissue
Touch and make retainer 132 by radial direction power when, retainer 132 is pushed downward upon on deformeter 134, thus cause deformeter along its
Longitudinal axis extends.When deformeter extends, electric signal is sent to and is by the electric current through the circuit 152 being embedded in deformeter
System controller is with indicative function in the radial load on retainer.By this feedback, practitioner will determine electrode whether with group
Knit contact.Thin section 144 is used for the wire rod for making to be located at the internal circuit of the strain gauge at the second attachment part 148 in annular electrode
Outside, wherein the wire rod is terminated at the first attachment part 146.
Referring now to Figure 8, showing according to the another of the annular electrode with least one contact force sensor of the invention
One embodiment.In this embodiment, annular electrode 160 includes three contact force sensor components 162, and each contact force is passed
Sensor component surrounds about 120 degree of the spaced radial of annular electrode 160.In this embodiment, force snesor be it is equidistant, still
In other embodiments, force snesor can be staggeredly.Annular electrode also includes the protruding part cut around the diameter of ring
164, to promote ring itself to deflect and be deflected along the deformeter that ring inner surface is attached.In this embodiment, it is not necessary to stop
Device.Those skilled in the art will be clear that, can according to practitioner using the purpose of conduit by contact force sensor component
Number changed to from one it is multiple.If for example, conduit can be deflected in multiple directions, then ring electrode may include be used for
The contact force sensor in the opposite each direction of yawing moment.
It is that above-mentioned conduit will include not describing for clarity or unshowned other structure as will be clear.For example, disappearing
Melt conduit 10 will include ablation necessary to those structures, such as receiving RF coils for make electrode 12, electrode 22 lead to
The circuit of electricity.Other circuits can be used for any suitable purpose, including route and/or anchoring fuse, to contribute to contingency
The electrode assemblie of the conduit 10 departed from during performing the operation or the recovery of other distal parts.Fuse can be by VectranTMOr it is other
Suitable material is formed.In other embodiments, one or more conduits can accommodate Electromagnetic Position Sensor, the electromagnetism
Position sensor can be used together cloth of the distal end in patient anatomy to contribute to conduit 10 with Mapping System
Put and above with respect to the visualization of the contact force sensor-based system described in Fig. 1 to Fig. 8.
Compared with conventional RF ablation catheters, the technology of the disclosure shows significant benefit.Contact force as described above
Sensing catheter can show the contact with organizing and provide on many instructions energetically of detection.Generally, the power recorded is from 0 gram
(that is, with organizing contactless) arrives 50 grams of maximum for detecting power.Preferably, it is about 30 grams to record power.In addition, multi-electrode is led
Each contact force sensor in the contact force sensor of pipe by provide on each electrode whether contact with tissue it is independent instead
Feedback.Pass through provided feedback information, practitioner is possible to make necessary adjustment with desired by the realization at treatment site
Ablation.
Use of the multiple electrode catheter 10 in ablative surgery can follow technology well known by persons skilled in the art.Fig. 9 is root
According to the schematic illustrations of the system 200 for being used for kidney and/or cardiac catheterization and ablation of embodiment of the present invention.System 200
Can be based on the CARTO for example manufactured by Biosense Webster companies (Diamond Bar, Calif.)TMMapping System,
And/or SmartAblate or nMarq radio-frequency signal generators.The system include with the intrusive mood probe of the form of conduit 10 and control and/
Or ablation platform 202.Operator 204 such as cardiologist, electrophysiologist or Interventional radiologists are for example, by femoral artery
Or ablation catheter 10 is inserted through the body of patient 206 by radial artery puncturing art so that the distal end of conduit 10 is specifically
Electrode 12 engages tissue at the ventricle 208 of desired locations such as patient 206.Conduit 10 is generally by the conjunction in its proximal end
Suitable connector is connected to console 202.Console 202 includes RF generators 208, and it is used for via conduit supply high-frequency electrical energy
Ablation is located at the tissue 210 at the position that electrode 22 is engaged.
Console 202 can also use magnetic position sensing, to determine the distal end of conduit 10 in the body of patient 206
Position coordinates.For this purpose, the drive circuit driving field generator in console 202, to produce magnetic field in the body of patient 206.
Generally, field generator includes coil, and the coil is placed in below patient's trunk of the known position in patient-external.These
Coil produces magnetic field in the predefined working space comprising area-of-interest.Magnetic field sensor in the distal end of conduit 10
(not shown) produces electric signal in response to these magnetic fields.Signal processor in console 202 can handle these signals,
To determine the position coordinates of distal end, position coordinates and orientation coordinate are generally included.The position method for sensing is in above-mentioned CARTO
Implement and in United States Patent (USP) 5,391,199,6,690,963,6,484,118,6,239,724,6,618,612 and 6 in system,
In 332,089, in PCT Patent Publication WO 96/05768 and the A1 of U.S. Patent Application Publication 2002/0065455,
Had a detailed description in 2003/0120150 A1 and 2004/0068178 A1, disclosures of which is all incorporated by reference
Herein.
Console 202 may include system controller 212, the system controller include processing unit 216, the processing unit with
The memory 214 for wherein storing the software of the operation for system 200 communicates.Controller 212 can be to include all-purpose computer
The industrial standard personal computer of processing unit.However, in some embodiments, it is at least some logical in the function of controller
(ASIC0 or field programmable gate array (FPGA) are performed the application specific integrated circuit for crossing using custom design.Controller 212 leads to
Often operated by operator 204 using suitable input peripheral and graphic user interface (GUI) 218, so that operator
It is capable of the parameter of initialization system 200.GUI 218 generally also shows code result to operator.Software in memory 214 can be with
Controller is electronically downloaded to for example, by network.Alternatively or additionally, software can be arranged on non-transient tangible Jie
On matter such as optics, magnetic or electronic storage medium.In some embodiments, one or more contact force sensors can be transmitted
Signal is to console 202 to provide the instruction of the pressure on electrode 22.Signal from contact force sensor line can be supplied to
System controller 212 is to obtain the measured value from deformeter 134.Such signal can be used for providing physicians with each independent electricity
The level of the tissue contact of pole.In addition, system controller 212 will provide on which of multi-electrode multi-electrode with it is to be ablated
Organize the instruction of contact.By the feedback information, practitioner, which is possible to make, necessary is adjusted to ensure that complete ablation.As above
Described, the present invention is well adapted for any multiple electrode catheter, such as the lasso trick with annular electrode, arc, spiral shape or
Those multiple electrode catheters of basket shape shape design.
Generally, during melting, heat is to be produced to realize in ablation, and this heat by the RF in patient tissue
Some be reflected to electrode 12, cause that coagulation occurs at electrode and around it.System 200 is rinsed by flushing hole 26
The region, and irrigation flow rate controls by wash module 220, and the electric power (RF can) of electrode 22 is sent to by ablation module
222 controls.Furthermore it is possible to estimate the percentage with the surface of the electrode 22 of tissue coupling based on observed contact force.
And for example, the additional sensor of conduit 10 can provide intracardiac electrocardiogram to system controller 212, for determining the tissue being ablated to
No longer conduct the time of arrhythmogenic electric current in site.
Described herein is some exemplaries.However, those skilled in the art of belonging the present embodiment
It should be appreciated that the principle of the disclosure is extended in other application easily by appropriate modification.
Claims (20)
1. a kind of conduit, including：
Elongate body；
At least one electrode, at least one described electrode is arranged on the center section of the elongate body；With
At least one contact force sensor component, at least one described contact force sensor component be operably connected to it is described extremely
A few electrode.
2. conduit according to claim 1, wherein the contact force sensor component includes：
Retainer；With
Deformeter, wherein the deformeter is operably attached to the retainer.
3. conduit according to claim 2, wherein the deformeter also includes：
Circuit；With
The circuit current source is connected to system controller by least single line material, at least single line material.
4. conduit according to claim 2, wherein the retainer includes being operably connected to the semicircle of flange part
Part.
5. conduit according to claim 2, wherein the retainer is arranged in the wall of at least one electrode
Correspondence shaping opening in.
6. conduit according to claim 3, wherein the deformeter also includes the first attachment part and the second attachment part,
First attachment part is used to connect at least single line material, and second attachment part is used for the deformeter
Inwall fixed at least one electrode.
7. conduit according to claim 1, wherein at least one described electrode includes RF ablating electrodes.
8. conduit according to claim 7, wherein at least one described electrode also includes multiple flushing holes, the flushing hole
Formed through the wall of the electrode.
9. conduit according to claim 7, wherein the conduit is multiple electrode catheter, the electrode is configured for
Helical pattern is formed during deployment.
10. conduit according to claim 7, wherein the conduit is multiple electrode catheter, the electrode is configured for
Lasso trick is formed in deployment.
11. conduit according to claim 7, wherein the conduit is multiple electrode catheter, the electrode is configured for
Basket shape is formed in deployment.
12. conduit according to claim 1, wherein at least one described electrode also includes three contact force sensors, institute
Contact force sensor is stated to be spaced apart described in the even circumferential of at least one electrode.
13. conduit according to claim 1, wherein the conduit is deflectable catheter.
14. conduit according to claim 1, wherein the conduit also includes point electrode.
15. a kind of method for being used to melt a part for the tissue of patient by operator, including：
Insert a catheter into patient's body, wherein the conduit includes：
Elongate body；
At least one electrode, at least one described electrode is arranged on the center section of the elongate body；
At least one contact force sensor component, at least one described contact force sensor component be operably connected to it is described extremely
A few electrode；With
Multiple flushing holes, the multiple flushing hole is formed in the wall of at least one electrode；
The conduit is connected to system controller, the system controller can receive the signal from multiple sensors and will
Electric power delivery at least one electrode described in；And
The electric power of at least one electrode is controlled with ablation tissue.
16. method according to claim 15, wherein control arrives the electric power of the electrode with ablation tissue at least portion
Divide ground based on the measured value from the multiple sensor.
17. method according to claim 15, in addition to based on the measurement from least one contact force sensor
Value come determine the electrode and tissue contact.
18. method according to claim 15, in addition to based on the measurement from least one contact force sensor
Value come estimate the electrode with tissue exposure level.
19. a kind of system for being used to melt a part for tissue, including：
Conduit, wherein the conduit includes：
Elongate body；
At least one electrode, at least one described electrode is arranged on the center section of the elongate body；
At least one contact force sensor component, at least one described contact force sensor component be operably connected to it is described extremely
A few annular electrode；With
Multiple flushing holes, the multiple flushing hole is formed in the wall of at least one electrode；
System controller, the system controller can receive signal from multiple sensors and by electric power delivery to described
At least one electrode simultaneously controls the electric power at least one electrode with ablation tissue.
20. system according to claim 19, wherein the system controller is also received from least one described contact
The signal of force snesor, to indicate the exposure level of at least one described electrode and the tissue to be ablated.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/951907 | 2015-11-25 | ||
| US14/951,907 US10813689B2 (en) | 2015-11-25 | 2015-11-25 | Ablation catheter with radial force detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107049469A true CN107049469A (en) | 2017-08-18 |
| CN107049469B CN107049469B (en) | 2022-03-18 |
Family
ID=57394448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611056417.5A Active CN107049469B (en) | 2015-11-25 | 2016-11-25 | Ablation catheter with radial force detection |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US10813689B2 (en) |
| EP (1) | EP3178428B8 (en) |
| JP (1) | JP6945992B2 (en) |
| CN (1) | CN107049469B (en) |
| AU (1) | AU2016259307A1 (en) |
| CA (1) | CA2948339A1 (en) |
| IL (1) | IL248978B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109953813A (en) * | 2017-12-25 | 2019-07-02 | 四川锦江电子科技有限公司 | A kind of cryoablation conduit |
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| CA2856732A1 (en) | 2011-12-09 | 2013-06-13 | Metavention, Inc. | Therapeutic neuromodulation of the hepatic system |
| EP4233991A1 (en) | 2013-03-15 | 2023-08-30 | Medtronic Ardian Luxembourg S.à.r.l. | Controlled neuromodulation systems |
| US10524859B2 (en) | 2016-06-07 | 2020-01-07 | Metavention, Inc. | Therapeutic tissue modulation devices and methods |
| US20180071009A1 (en) | 2016-09-12 | 2018-03-15 | Biosense Webster (Israel) Ltd. | Ablation catheter with strain gauges |
| US20190357959A1 (en) * | 2017-02-10 | 2019-11-28 | St. Jude Medical, Cardiology Division, Inc. | Apparatus and method for cryoablation |
| EP3476344B1 (en) * | 2017-10-05 | 2020-03-25 | Heraeus Deutschland GmbH & Co. KG | Catheter system |
| CN116390692A (en) * | 2020-10-15 | 2023-07-04 | 波士顿科学医疗设备有限公司 | Electrosurgical device with automatic shut-off |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3178428B8 (en) | 2022-07-20 |
| US10813689B2 (en) | 2020-10-27 |
| US20170143412A1 (en) | 2017-05-25 |
| IL248978B (en) | 2021-05-31 |
| EP3178428B1 (en) | 2022-06-08 |
| JP2017094091A (en) | 2017-06-01 |
| CA2948339A1 (en) | 2017-05-25 |
| AU2016259307A1 (en) | 2017-06-08 |
| JP6945992B2 (en) | 2021-10-06 |
| EP3178428A1 (en) | 2017-06-14 |
| IL248978A0 (en) | 2017-03-30 |
| CN107049469B (en) | 2022-03-18 |
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